I'm trying to use Live Distribute by holding the spacebar to proportionally re-align multiple objects, as shown in the AdobeTV video. The spacebar, though, is changing my selection tool to a grab tool. I actually thought this was a default behavior, but maybe it's something I set up in the Keyboard shortcuts. If this is the case, though, I don't know where to find it in the shortcuts in order to change it.

And frankly, I don't know if I want to change the spacebar behavior, since I grab the screen to navigate much more often than I need to use Live Distribute. Can anyone help me with this conundrum?